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|
use {
super::*,
crate::{
browser::BrowserState,
command::Sequence,
errors::TreeBuildError,
launchable::Launchable,
verb::Internal,
},
std::fmt,
};
/// Either left or right
#[derive(Debug, Clone, Copy, PartialEq)]
pub enum HDir {
Left,
Right,
}
/// the symbolic reference to the panel to close
#[derive(Debug, Clone, Copy, PartialEq)]
pub enum PanelReference {
Active,
Leftest,
Rightest,
Id(PanelId),
Preview,
}
/// Result of applying a command to a state
pub enum CmdResult {
ApplyOnPanel {
id: PanelId,
},
ClosePanel {
validate_purpose: bool,
panel_ref: PanelReference,
},
DisplayError(String),
ExecuteSequence {
sequence: Sequence,
},
HandleInApp(Internal), // command must be handled at the app level
Keep,
Launch(Box<Launchable>),
NewPanel {
state: Box<dyn PanelState>,
purpose: PanelPurpose,
direction: HDir,
},
NewState {
state: Box<dyn PanelState>,
message: Option<&'static str>, // explaining why there's a new state
},
PopStateAndReapply, // the state asks the command be executed on a previous state
PopState,
Quit,
RefreshState {
clear_cache: bool,
},
}
impl CmdResult {
pub fn verb_not_found(text: &str) -> CmdResult {
CmdResult::DisplayError(format!("verb not found: {:?}", &text))
}
pub fn from_optional_state(
os: Result<BrowserState, TreeBuildError>,
message: Option<&'static str>,
in_new_panel: bool,
) -> CmdResult {
match os {
Ok(os) => {
if in_new_panel {
CmdResult::NewPanel { // TODO keep the message ?
state: Box::new(os),
purpose: PanelPurpose::None,
direction: HDir::Right,
}
} else {
CmdResult::NewState {
state: Box::new(os),
message,
}
}
}
Err(TreeBuildError::Interrupted) => CmdResult::Keep,
Err(e) => CmdResult::error(e.to_string()),
}
}
pub fn new_state(state: Box<dyn PanelState>) -> Self {
Self::NewState { state, message: None }
}
pub fn error<S: Into<String>>(message: S) -> Self {
Self::DisplayError(message.into())
}
}
impl From<Launchable> for CmdResult {
fn from(launchable: Launchable) -> Self {
CmdResult::Launch(Box::new(launchable))
}
}
impl fmt::Debug for CmdResult {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"{}",
match self {
CmdResult::ApplyOnPanel { .. } => "ApplyOnPanel",
CmdResult::ClosePanel {
validate_purpose: false, ..
} => "CancelPanel",
CmdResult::ClosePanel {
validate_purpose: true, ..
} => "OkPanel",
CmdResult::DisplayError(_) => "DisplayError",
CmdResult::ExecuteSequence{ .. } => "ExecuteSequence",
CmdResult::Keep => "Keep",
CmdResult::Launch(_) => "Launch",
CmdResult::NewState { .. } => "NewState",
CmdResult::NewPanel { .. } => "NewPanel",
CmdResult::PopStateAndReapply => "PopStateAndReapply",
CmdResult::PopState => "PopState",
CmdResult::HandleInApp(_) => "HandleInApp",
CmdResult::Quit => "Quit",
CmdResult::RefreshState { .. } => "RefreshState",
}
)
}
}
|
